# Necessary Devil vs SipStreak

The clearest difference is in-app purchases: Necessary Devil at none against SipStreak's 1. Necessary Devil also leads on iOS requirement (15.1 vs 17.0). SipStreak's advantage is update cadence (every 2 days vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. SipStreak sells 1 one-off in-app purchase. Necessary Devil asks for nothing beyond the download.

Necessary Devil ships an update every 2 months, SipStreak every 2 days. The most recent releases landed on October 3, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Necessary Devil | SipStreak |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 days** |
| Monetization | Free | — |
| Size | 40 MB | 7 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Necessary Devil](https://appshunter.io/developer/1826779719) | [TheChosenVictor LLC](https://appshunter.io/developer/1884403150) |

## What reviewers say

### Necessary Devil

[App page](https://appshunter.io/ios/app/necessary-devil/id6748644766)

Transform your daily walks into engaging, social fitness experiences. Participate in solo or team step challenges, track your progress in real-time, and connect with others to stay motivated. It's designed to make fitness fun and rewarding for individuals and groups.

**Highlights:** Daily, weekly, and custom step challenges, Solo or team participation, Real-time leaderboard and progress tracking, Connect with friends and groups, Sync with Google Fit and fitness trackers

**Features:** macOS Compatibility

**In-app purchases:** none


### SipStreak

[App page](https://appshunter.io/ios/app/sipstreak-water-tracker/id6760553201)

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SipStreak Pro | $4.99 | one-time |


## Frequently asked questions

### Is Necessary Devil free?

Necessary Devil is free to download, with no in-app purchases.

### Is SipStreak free?

SipStreak is free to download, with in-app purchases available.

### Do Necessary Devil or SipStreak have ads?

Neither Necessary Devil nor SipStreak shows ads.

### Which is updated more often, Necessary Devil or SipStreak?

Necessary Devil ships an update every 2 months, and SipStreak every 2 days. Most recently, Necessary Devil was updated on October 3, 2026 and SipStreak on October 1, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*